.middle > div {
    border: 1px solid gray;
}

.company-page > div:nth-child(1) > div {
    /*相对于当前字符的3个字符*/
    text-indent: 3em;
    font-size: 10px;
    font-family: 新宋体;
    line-height: 30px;
    margin-bottom: 30px;

}

.company-page > div:nth-child(2) {
    overflow: hidden;
}

.product {
    display: flex;
    text-align: center;
    overflow: hidden;
    /*animation: move 5s linear infinite;*/
    border: 1px solid red;
    /*border-style: solid;*/
    /*border-color: red;*/
    /*border-width: 1px;*/
    animation-name: move;
    animation-duration: 5s;
    animation-direction: alternate;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
}

.product > div {
    margin: 5px;

}

@keyframes move {
    0% {
        margin-left: 0;
    }
    20% {
        margin-left: -200px;
    }
    40% {
        margin-left: -400px;
    }
    60% {
        margin-left: -200px;
    }
    80% {
        margin-left: 0;
    }
    100% {
        margin-left:0;
    }
}

.product > div > div:nth-child(1) {
    width: 150px;
    height: 100px;
}

.product > div > div:nth-child(1) img {
    width: 150px;
    height: 100px;
}
